I'm looking for the total number of meters you would have to travel around the world if the entire voyage was on water. Thru canals counts, as well as any waterway that gets me around the world. I don't want circumference of the world, but travelable distance.
I ask this not because I'm going to actually sail or boat around the world, but because I've been rowing for exercise for 17 years. I've accumulated 35,000,000 meters in that time and estimate that I've 'rowed around the world' when I get to about 41,000,000 meters. Is that correct?